> You know these solar cookers might seem like the cat's pajamas to you in
> sunny southern California, (the never-ending-summer-land of fruits and nuts)

The San Francisco Bay Area is renowned for its fog and chilly summers. But not for being in sunny southern California.

> for the rest of us who are not privileged enough to live in sunbelt
> retirement communities.

Perhaps there are other challenges than having actually to make the cheap solar cooker in an emergency. I'll grant you that. You win.